cryptodev: Fix changed mm interface in Kernel 4.9

The memory management interface has changed in Kernel 4.9.

This patch adds a patch which fixes the paramter of the function call.

Backport from https://github.com/cryptodev-linux/cryptodev-linux
Based on commit f126e4837e6334d0464540995df7426fedf6b175

(From OE-Core rev: 29e3e2999ae0fd92fd41c2180359e110301a488c)

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/meta/recipes-kernel/cryptodev/files/0001-Adjust-to-another-change-in-the-user-page-API.patch b/meta/recipes-kernel/cryptodev/files/0001-Adjust-to-another-change-in-the-user-page-API.patch
new file mode 100644
index 0000000000..fb75278b5e
--- /dev/null
+++ b/meta/recipes-kernel/cryptodev/files/0001-Adjust-to-another-change-in-the-user-page-API.patch
@@ -0,0 +1,40 @@
+From f126e4837e6334d0464540995df7426fedf6b175 Mon Sep 17 00:00:00 2001
+From: Michael Weiser <michael.weiser@gmx.de>
+Date: Fri, 11 Nov 2016 18:09:32 +0100
+Subject: [PATCH] Adjust to another change in the user page API
+
+4.9.0 will replace the write and force flags of get_user_pages_remote()
+with a gup_flags parameter[1]. Distinguish the two APIs based on kernel
+version we're compiling for.
+
+[1] https://github.com/torvalds/linux/commit/9beae1ea89305a9667ceaab6d0bf46a045ad71e7
+
+Upstream-Status: Backport
+
+Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
+---
+ zc.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/zc.c b/zc.c
+index a97b49f..e766ee3 100644
+--- a/zc.c
++++ b/zc.c
+@@ -65,7 +65,13 @@ int __get_userbuf(uint8_t __user *addr, uint32_t len, int write,
+        ret = get_user_pages(
+ #endif
+                        task, mm,
+-                       (unsigned long)addr, pgcount, write, 0, pg, NULL);
++                       (unsigned long)addr, pgcount,
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0))
++                       write ? FOLL_WRITE : 0,
++#else
++                       write, 0,
++#endif
++                       pg, NULL);
+        up_read(&mm->mmap_sem);
+        if (ret != pgcount)
+                return -EINVAL;
+-- 
+1.9.1
+